In your BT plugins folder in BT_Screen_menuListSimple.m or Menu List with image.m file search for the following

 

and add this line below.

cell.accessoryView = [[[UIImageView alloc] initWithImage:[UIImage imageNamed:@”accessory.png“]] autorelease];

You will have to create an image with the file name of your choice and drag it into XCode. The image size should be around 25 x 25.

Here is an example of before and after